What is the most widely accepted and supported model for explaining the movement of phloem sap in flowering plants?
a. the translocation mechanism
b. the pressure-flow mechanism
c. the transpiration mechanism
d. the cohesion-tension mechanism
Ans: b. the pressure-flow mechanism
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A) N-acetyl glucosamine. B) erythrose. C) mannose. D) glucose. E) both choices A and C
In a mycorrhizal association, the plant root cells donate ________ to the fungus, which reciprocates by giving the plant ________
a. minerals / sugars and nitrogen-rich compounds b. sugars and nitrogen-rich compounds / minerals c. minerals / water d. water / fixed atmospheric nitrogen
Which of the following events happens during the Calvin Cycle (light independent) stage of photosynthesis?
Which of these is a correct order of taxonomic categories from most inclusive to least inclusive?
A) domain, kingdom, phylum, class, order, family, genus B) domain, phylum, kingdom, order, class, family, genus C) domain, kingdom, class, phylum, order, family, genus D) kingdom, domain, phylum, order, class, family, genus